Abstract
The stannylphosphine-metal pentacarbonyls (CO) 5M·PPh 2SnMe 3 (M = Cr, Mo, W) methylate BCl 3 and yield the monochloro compounds (CO) 5M·PPh 2SnMe 2Cl. However, up to two of the methyl groups are replaced during the reaction with BBr 3 in benzene solution, the products being (CO) 5M·PPh 2SnMe 2Br and (CO) 5M·PPh 2SnMeBr 2.
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